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Partial benzylation of methyl 4,6-O-benzylidene-α-d-mannopyranoside

✍ Scribed by Yôtaro Kondo; Kazuhiko Noumi; Shigemi Kitagawa; Shigehiro Hirano

Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
168 KB
Volume
123
Category
Article
ISSN
0008-6215

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## Abstract Methyl 2‐__O__‐benzyl‐6‐deoxy‐3‐__C__‐methyl‐α‐D‐mannopyranoside (2) was synthesized in ten steps by starting from the readily available methyl 2,3‐anhydro‐4,6‐__O__‐benzylidene‐α‐D‐allo‐pyranoside (3). The key step was the stereoselective __cis__‐hydroxylation (cat. osmium(VIII) oxide)